Debating on changing the CP4 for regular maintenance!!!
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7th Gear
Joined: Sep 2022
Posts: 7
Likes: 4
Debating on changing the CP4 for regular maintenance!!!
So,
I have a 2017 F250 with the 6.7…..200k.miles and I feel like I’m pushing my luck with the factory CP4. I debated on just getting rid of the truck until I went to the dealership to look at a new ChevyTrail Boss…..until they told me that a $10k market adjustment is added to the MSRP…..not getting a new truck….lol.
So now, back to keeping my F250. I called the dealer and they quoted me $2800 to install a new CP4 and new fuel rails. Should I pull the trigger and shave 98% of my anxiety away?
I thought about adding a DPK….but with that many miles, I figured that if I’m already in that deep might as well just put a new CP4 in there
By the way, truck runs fine…..just want to keep it that way.
thanks for the input.
I have a 2017 F250 with the 6.7…..200k.miles and I feel like I’m pushing my luck with the factory CP4. I debated on just getting rid of the truck until I went to the dealership to look at a new ChevyTrail Boss…..until they told me that a $10k market adjustment is added to the MSRP…..not getting a new truck….lol.
So now, back to keeping my F250. I called the dealer and they quoted me $2800 to install a new CP4 and new fuel rails. Should I pull the trigger and shave 98% of my anxiety away?
I thought about adding a DPK….but with that many miles, I figured that if I’m already in that deep might as well just put a new CP4 in there
By the way, truck runs fine…..just want to keep it that way.
thanks for the input.
Last edited by Dpoulos2; Sep 13, 2022 at 06:33 AM.
Lead Driver
Joined: May 2021
Posts: 5,842
Likes: 3,465
From: Uh oh, CA
Probably wouldn’t be a bad idea, but when you add the DPK just check the filter on the FCA and if there is debris go ahead and change it all. If not you are probably ok. But, just because it’s a new pump doesn’t mean it’s all necessarily safe either.
Cargo Master
Joined: Apr 2018
Posts: 2,403
Likes: 1,123
The fear of the CP4
I don't understand it. I currently have about 1.8 million miles on the current fleet. Never had a CP4 problem.
What's to say the new won't last 5000 miles or 50 or the current one won't last another 200K
I don't understand it. I currently have about 1.8 million miles on the current fleet. Never had a CP4 problem.
What's to say the new won't last 5000 miles or 50 or the current one won't last another 200K
Hotshot
Joined: Jul 2013
Posts: 14,266
Likes: 2,187
you can use forscan to determine your requested fuel rail pressure vs your actual. dont know what the out of spec number is before you get wrench lights....but it will give you an ideal of the wear of the cp4 and the effectiveness of your fuel metering valve. so for example if the requested pressure at 2000 rpm and the actual is 1:1 , then there is no apparent wear that the metering valve can not mitigate.
Cross-Country
Joined: Sep 2021
Posts: 62
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From: Orange County
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Laughing Gas
Joined: Jul 2020
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Mine is in the shop now because of not maintaining fuel pressure. Getting the P0087 code. It has not been diagnosed yet.
It was only during a regen and lugging but is progressively getting worse and more often.
The mechanic said usually you have sign’s that it is failing such as I have, unless someone dumped def or it got water in, but most people ignore them then hook on a heavy trailer and head down the interstate.
Then they trash the whole system.
It was only during a regen and lugging but is progressively getting worse and more often.
The mechanic said usually you have sign’s that it is failing such as I have, unless someone dumped def or it got water in, but most people ignore them then hook on a heavy trailer and head down the interstate.
Then they trash the whole system.
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Lead Driver
Joined: Dec 2020
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SPE uses that screen and S&S was using that Parker/Racor setup. They have changed to a Donaldson filter. All their new kits use the Donaldson. So now instead of looking into a clear bowl for debris you would have to cut the filter open to inspect it. Still the best DPK but for ease of inspection that Parker/Racor filter was nice.
Mountain Pass
Joined: Dec 2020
Posts: 233
Likes: 126
From: Western NC
100% agree. Chasing good money after a what IF is not a solid plan IMO. If money is no issue and it’s cheaper than buying a new truck and it helps you sleep better replace it.
Laughing Gas
Joined: Jul 2020
Posts: 975
Likes: 458
If the old one is tried and proven why not run it. The new one may be faulty or be from a bad production run and trash the system.
Lead Driver
Joined: Feb 2022
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The way I see it, do everything you can to prolong the life and prevent complete failure if it does give it up. Change the filters regularly, check the water separator once a month, make sure the cap is ON the diesel tank when filling DEF. Make sure that no rain can get in while filling, and make sure that the fuel you get is from a well turned over tank, like from truck stops. Install some kind of fuel pump separation kit to prevent anything that could come from the crankcase of the pump into the pressure heads of the pump (DPK). I also use good additives like Hot Shots Secret in all my diesels just to make sure there is good lubricity. 2 ounces for the 48 tank every fill, even if it is a half tank. 2 ounces of prevention prevent $10,000 in repairs.
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